Truck cab



FIG. 1 is a perspective view of the truck cab showing our new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof; and

FIG. 6 is a bottom view thereof. 

The ornamental design for a truck cab, substantially as shown. 